Lead Metal Production at Paroo Station Mine Using …
147
Definitive Feasibility Study
SNC-Lavalin (SNC-L) completed a definitive feasibility study in 2018 and a revised
feasibility study in 2019 (‘DFS’) incorporating the results of various metallurgical test
work programs undertaken in 2017 and 2018 for the on-site production of lead ingots.
Lead concentrate from the existing concentrator will be processed through a new
hydrometallurgical facility which will be located adjacent the existing concentrator.
SNC-L’s scope of services for the DFS was the performance of all necessary engineering design and estimation in order to produce a Class 3 estimate in compliance
with the AACE International Standard (the “SNC-L Scope”). This includes:
• Confirming (based on testwork results) the technical suitability of the metallurgical
process selected to the extent possible;
• Estimating the capital and operating cost of the mineral processing and hydrometallurgical facilities;
• Providing input into RHM financial evaluations as required; and
• Providing an integrated DFS report.
The following work was excluded from the SNC-L scope but data/information
provided by others was utilized by SNC-L in its design and estimates where
necessary:
• All geology and mining work;
• Proof of concept, variability, and pilot plant testwork;
• Water supply from borefields;
• Tailings storage facility (TSF);
• Environmental work;
• Geotechnical investigation and site survey;
• Regulations, permits, and approvals;
• Upgrades to the existing accommodation village;
• Marketing;
• Exchange rates; and
• All Owner’s costs including insurances and import duty.
All information provided to SNC-L by others has been assumed correct and not
verified by SNC-L. The battery limits for the SNC-L scope are as follows:
• The underside of the existing concentrate filter discharge chute;
• Existing raw water pond;
• Delivery into existing concentrator tailings disposal system; and
• Delivery of lead ingot into on-site storage.
The hydrometallurgical facility design is based on the 4-phase test program and
vendor test work:
• Phase 1—Proof of Concept—ALS;
• Phase 2—Variability—ALS;
• Phase 3—Pilot Plant—ALS;
147
Definitive Feasibility Study
SNC-Lavalin (SNC-L) completed a definitive feasibility study in 2018 and a revised
feasibility study in 2019 (‘DFS’) incorporating the results of various metallurgical test
work programs undertaken in 2017 and 2018 for the on-site production of lead ingots.
Lead concentrate from the existing concentrator will be processed through a new
hydrometallurgical facility which will be located adjacent the existing concentrator.
SNC-L’s scope of services for the DFS was the performance of all necessary engineering design and estimation in order to produce a Class 3 estimate in compliance
with the AACE International Standard (the “SNC-L Scope”). This includes:
• Confirming (based on testwork results) the technical suitability of the metallurgical
process selected to the extent possible;
• Estimating the capital and operating cost of the mineral processing and hydrometallurgical facilities;
• Providing input into RHM financial evaluations as required; and
• Providing an integrated DFS report.
The following work was excluded from the SNC-L scope but data/information
provided by others was utilized by SNC-L in its design and estimates where
necessary:
• All geology and mining work;
• Proof of concept, variability, and pilot plant testwork;
• Water supply from borefields;
• Tailings storage facility (TSF);
• Environmental work;
• Geotechnical investigation and site survey;
• Regulations, permits, and approvals;
• Upgrades to the existing accommodation village;
• Marketing;
• Exchange rates; and
• All Owner’s costs including insurances and import duty.
All information provided to SNC-L by others has been assumed correct and not
verified by SNC-L. The battery limits for the SNC-L scope are as follows:
• The underside of the existing concentrate filter discharge chute;
• Existing raw water pond;
• Delivery into existing concentrator tailings disposal system; and
• Delivery of lead ingot into on-site storage.
The hydrometallurgical facility design is based on the 4-phase test program and
vendor test work:
• Phase 1—Proof of Concept—ALS;
• Phase 2—Variability—ALS;
• Phase 3—Pilot Plant—ALS;